U. S B. F— Doc. 783. 



FIG. 1.— MOUTH OF 8L0DGETT BROOK IN AUGUST. DEADWATER JUST BELOW BRIDGE 



FIG. 2.— A CHUB S NEST. PARTLY EXPOSED BY SUBSIDING WATERS. 

 (Phoi()f;rai.li ]>y courtesy of Dr. Alfrefl T. Wilson.) 



